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