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)(19,27)(20,24)(21,25)(22,26)(23,30)(28,31)(29,32)(33,34,37,38)(35,41,43,39)(36,40,44,45)(42,47,48,46)(1,2)(3,8)(4,7)(5,9)(6,11)(10,15)(12,14)(13,16)(17,19)(18,23)(20,28)(21,29)(22,30)(24,25)(26,27)(31,32)(34,38)(39,41)(40,45)(46,47) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(17,20,22,29)(18,24,26,32)(19,28,30,21)(23,25,27,31)(33,35,37,43)(34,39,38,41)(36,42,44,48)(40,46,45,47)(1,4)(2,7)(3,10)(5,12)(6,13)(8,15)(9,14)(11,16)(33,34)(35,39)(36,40)(37,38)(41,43)(42,46)(44,45)(47,48) involution — undirected(1,3)(2,8)(4,10)(5,11)(6,9)(7,15)(12,16)(13,14)(17,21,22,28)(18,25,26,31)(19,29,30,20)(23,24,27,32)(1,2)(3,6)(4,7)(5,9)(8,11)(10,13)(12,14)(15,16)(17,18)(19,23)(20,24)(21,31)(22,26)(25,28)(27,30)(29,32)(33,36,37,44)(34,40,38,45)(35,42,43,48)(39,46,41,47)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.