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