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