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