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