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