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