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