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