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