One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,7)(5,8)(9,11)(10,13)(12,14)(15,16)(17,18)(19,24)(20,30)(21,25)(22,26)(23,27)(28,32)(29,31)(33,34)(35,39)(36,45)(37,44)(38,40)(41,46)(42,48)(43,47) involution — undirected(1,2,5,8)(3,9,11,6)(4,7,12,14)(10,15,16,13)(17,19,23,28)(18,24,27,32)(20,31,25,22)(21,26,30,29)(33,35,38,43)(34,39,40,47)(36,44,46,42)(37,41,48,45)(4,12)(7,14)(10,16)(13,15)(19,28)(22,31)(24,32)(26,29)(34,40)(35,43)(41,45)(42,44) involution — undirected(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,20)(18,21)(19,22)(23,25)(24,29)(26,32)(27,30)(28,31)(33,36)(34,41)(35,44)(37,47)(38,46)(39,48)(40,45)(42,43) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(17,21)(18,25)(19,29)(20,27)(22,32)(23,30)(24,31)(26,28)(33,37,38,48)(34,42,40,44)(35,45,43,41)(36,39,46,47)(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(17,22)(18,26)(19,20)(21,32)(23,31)(24,30)(25,28)(27,29)(33,34)(35,39)(36,41)(37,42)(38,40)(43,47)(44,48)(45,46)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.