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