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