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