One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,9)(3,8,11,16)(4,6,14,15)(5,13,12,10)(17,18)(19,28)(20,21)(22,29)(23,27)(24,31)(25,32)(26,30)(33,34,38,42)(35,41,37,39)(36,44,46,40)(43,47,45,48)(1,3)(2,8)(4,5)(6,13)(7,11)(9,16)(10,15)(12,14)(17,19)(18,24)(20,29)(21,30)(22,25)(23,31)(26,32)(27,28)(33,34)(35,39)(36,44)(37,41)(38,42)(40,46)(43,48)(45,47) involution — undirected(2,9)(3,11)(4,14)(10,13)(17,20,23,32)(18,21,27,25)(19,29,31,26)(22,24,30,28)(33,35,38,37)(34,39,42,41)(36,45,46,43)(40,48,44,47)(1,4)(2,6)(3,12)(5,11)(7,14)(8,10)(9,15)(13,16)(17,20)(18,25)(19,29)(21,27)(22,24)(23,32)(26,31)(28,30)(33,36,38,46)(34,40,42,44)(35,43,37,45)(39,47,41,48)(1,5,7,12)(2,10,9,13)(3,4,11,14)(6,8,15,16)(17,21,23,25)(18,20,27,32)(19,30,31,22)(24,29,28,26)(33,34)(35,39)(36,40)(37,41)(38,42)(43,47)(44,46)(45,48)(1,6)(2,4)(3,13)(5,8)(7,15)(9,14)(10,11)(12,16)(17,22,23,30)(18,26,27,29)(19,25,31,21)(20,24,32,28)(33,37,38,35)(34,41,42,39)(36,45,46,43)(40,48,44,47)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.