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