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