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