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